.loader {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
  border: 3px solid;
  border-color: #6c757d #6c757d transparent transparent;
  box-sizing: border-box;
  animation: rotation 2s linear infinite;
}
.loader::after,
.loader::before {
  content: '';  
  box-sizing: border-box;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  border: 3px solid;
  border-color: transparent transparent #092565 #092565;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-sizing: border-box;
  animation: rotationBack 1s linear infinite;
  transform-origin: center center;
}
/* #092565 */
/* #3a0647 */
.loader::before {
  width: 32px;
  height: 32px;
  border-color: #6c757d #6c757d transparent transparent;
  animation: rotation 3s linear infinite;
}
    
@keyframes rotation {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
} 
@keyframes rotationBack {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(-360deg);
  }
}